Taking The Product Out Of Operation; Short-Term Shutdown; Long-Term Shutdown - Grundfos LSV Montage- Und Betriebsanleitung

Do not overgrease.
Too much grease can cause overheating
and premature bearing failure.
Ball-bearing grease
Manufacturer Lubricant
KYODO YUSHI MULTEMP SRL
Shell Dolium R
Exxon Polyrex
SRI grease NLGI 2
Chevron
Black pearl NLGI 2
Philips Polytac
Texaco Polystar RB
2) Grundfos recommends KYODO YUSHI MULTEMP SRL
grease for relubrication.
Motor bearings
Lubricate the motor bearings in accordance with the
indications on the motor nameplate.

7. Taking the product out of operation

The following shutdown procedures apply to most
normal shutdowns. If the pump is to be inoperative for
a long time, follow the storage procedures in section

Long-term shutdown.

1. Always close the outlet or throttle valve before
stopping the pump. Close the valve slowly to
prevent hydraulic shock, but make sure that the
pump does not run against a closed valve for
more than a few seconds.
2. Switch off the power supply to the motor.
Related information
7.2 Long-term shutdown

7.1 Short-term shutdown

1. For overnight or temporary shutdown periods
under non-freezing conditions, the pump may
remain filled with liquid. Make sure the pump is
fully primed before restarting.
2. For short or frequent shutdown periods at
temperatures below 0 °C, keep the liquid moving
within the pump casing and insulate or heat the
pump exterior to prevent freezing.
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7.2 Long-term shutdown
For long shutdown periods or to isolate the pump for
maintenance, close the inlet and outlet valves. If no
inlet valve is fitted and the pump has positive inlet
height, drain all liquid from the inlet pipe to terminate
the liquid flow into the pump inlet port. If applicable,
turn off any external source of cooling or lubricating
liquid to the stuffing boxes or shaft seals. Remove the
2)
plugs in the pump drain and vent tappings, as
required, and drain all liquid from the pump casing.
Remove the stuffing box glands and packing rings, if
applicable.
1. After draining the pump during long shutdown
periods under freezing conditions, blow out all
liquid in passages and air pockets using
compressed air. You can prevent freezing of
pumped liquid by filling the pump with antifreeze
solution.
2. Monthly rotate the shaft by hand to coat the
bearings with lubricant and delay oxidation and
corrosion.
3. Where applicable, follow the motor manufacturer's
storage recommendations.
CAUTION
Hot or cold surface
Minor or moderate personal injury
‐
Make sure that the escaping water
does not cause injury to persons or
damage to the motor or other
components.
‐
In hot-water installations, pay special
attention to the risk of injury caused by
scalding hot water.
‐
In cold-liquid installations, pay special
attention to the risk of injury caused by
cold liquids and cold surfaces.
WARNING
Harm to health
Death or serious personal injury
‐
Do not use antifreeze solution if
you use the pump for public or
potable-water supply.
Do not tighten the vent screw or refit
the drain plug until the pump is to be
used again.